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Hydrograph River at a Glance Download
Sacramento River at Rio Vista Bridge Stage (ft)Highest Observation: 5.2 ft at 5:45AM Nov 26, 2022Observed: 5 ft at 5:45AM Nov 27, 2022Observed: 4.6 ft at 5:30AM Nov 28, 2022Forecast: 4.7 ft 12:45PM Nov 28, 2022Highest Forecast: 6.9 ft 6:30PM Nov 28, 2022Forecast: 2.2 ft 2:45AM Nov 29, 2022Forecast: 5.8 ft 10:00AM Nov 29, 2022Forecast: 4.4 ft 2:15PM Nov 29, 2022Forecast: 6.2 ft 7:30PM Nov 29, 2022Forecast: 2.2 ft 3:45AM Nov 30, 2022Forecast: 6 ft 10:45AM Nov 30, 2022Forecast: 4.1 ft 3:45PM Nov 30, 2022RVBC1(plotting HGIRZ) Graph Created (10:38AM Nov 28, 2022)ObservedForecast (issued 6:04AM Nov 28)Latest observed value: 4.6 ft at 5:30 AM PST 28-Nov-2022. Flood Stage is 11.9 ft
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About this graph
Tabular Data (UTC)
Tabular Data (PST)
XML Data
RSS Files
Datum: NAVD88
NOTE: Crests prior to 10/1/2006 are in an old datum. Datum change to NAVD88 occurred 10/1/2006. See LINK for correction value.

NOTE: Forecasts for the Sacramento River at Rio Vista Bridge are issued routinely year-round.

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Upstream Locations Upstream Gauge
Flood Categories (in feet)
Major Flood Stage: 21.4
Moderate Flood Stage: 20.4
Flood Stage: 11.9
Action Stage: 7.4
Low Stage (in feet): -9999

Historic Crests
(1) 10.55 ft on 02/06/1998
(2) 9.79 ft on 02/11/2017
(3) 9.37 ft on 01/11/2017
(4) 9.11 ft on 12/16/2002
(5) 9.08 ft on 01/08/2005
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(P): Preliminary values subject to further review.

Recent Crests
(1) 8.92 ft on 02/14/2019
(2) 7.78 ft on 07/12/2018
(3) 9.79 ft on 02/11/2017
(4) 9.37 ft on 01/11/2017
(5) 7.95 ft on 12/15/2016
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
Zoom Level:16
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Gauge LocationGauge Map Marker
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
21.4 Stages above 21.4 feet result in major flooding outside of the levees. Top of levee.
9.4 The lower end of Rio Vista begins to flood at high tides.
8.4 Nearby low lying delta tracts are threatened by flooding.
About This Location Collapse

Latitude: 38.159722° N, Longitude: 121.686389° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 11.9 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
(gauge height = flood stage)
Elevation information source
NAVD88 0 ft 11.9 ft Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  

Current/Historical Observations:

Additional Information Collapse
10/1/2006 Datum Changed to NAVD 88. New values are .6 ft below old values.
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The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
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Sacramento Weather Forecast Office

Sacramento, CA
(916) 979-3051
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